Dermot, a paramedic and clinical team leader in Rhyl, said: “Fortunately being there at the time it happened meant I could start CPR (cardiopulmonary resuscitation) straight away; others aren’t as fortunate.”

Dermot was backed up by colleagues Mally Roberts, Dave Barnes and Rhian Toffrey, and together they rushed Ken to hospital.

The paramedics used the defibrillator at home and en route to Ysbyty Glan Clwyd, and then again inside the hospital.

He spent six days in a medically induced coma, before undergoing a procedure in which three stents were inserted in the arteries around his heart to improve the blood supply to his heart muscle.

Before his cardiac arrest, doctors found that Ken had an aortic aneurysm (a swelling of the main blood vessel that leads away from the heart) but it was not thought to be life-threatening.

The former mechanic was released from hospital just in time to walk his youngest daughter Melissa, 32, down the aisle at her wedding at Bodelwyddan’s Marble Church in July.

Dermot added: “Luckily I was only a couple of minutes away when we had Deborah’s call to 999, and the fact I was actually with Ken when he went into cardiac arrest meant I was able to get to work on him right away.

“If I’d have been tied up on a hoax call, or if I’d have been with someone who called 999 because their athlete’s foot infection had worsened – and believe me, we get those calls – then I wouldn’t have got there when I did, and Ken might not have survived."

Dermot added: “It’s not often you get a chance to meet again the people whose lives you helped to save, so it’s been really emotional.”